specularite

specularite

[′spek·yə·lə‚rīt]
(mineralogy)
A black or gray variety of hematite with brilliant metallic luster, occurring in micaceous or foliated masses, or in tabular or disklike crystals. Also known as gray hematite; iron glance; specular iron.
References in periodicals archive ?
Or, on le voit, cette quete confronte le sujet migrant au probleme d'une specularite complexe.
Ils se deplacent dans un espace sans bornes ou les divisions cartographiques sont eclatees, ou les frontieres temporelles s'effritent a chaque instant, ou le commencement et la fin se court-circuitent, ou l'apres antecede l'avant, ou les temps archaiques s'entrelacent, dans un jeu de specularite permanent, avec l'ere moderne.
There is no gold at Tsodilo, but massive quantities of both platy quartz vein and granular micaceous specularite were mined there at this time; a series of radiocarbon ages indicates that mining, complete with tunnels and inclined shafts, was intensive during the period c.
D'autres experiences encore essayaient de faire jouer certains modeles narratifs conventionnels les uns contre les autres, afin d'elargir le champ de la specularite textuelle et ainsi de mettre la litterature elle-meme en proces.
d'autant plus aisement que la specularite apparait des
Where observed in-situ the specularite appears to broadly follow the fold axes of northeast trending folds interpreted as D2 structures, which are parallel to a distinct set of northeast trending faults apparent in the high-resolution magnetic data.
In the days that followed, after driving to the university in my fossil-fuelled car, I read about stones and arrows, about talking stars and talking flowers, stories of a time when animals were people and people were animals, stories about water and rain and rain's things, about the use of ochre and specularite, stories about Boers and dispossession.
Ancient hunter-gatherers are thought to have mined red hematite and blue-black specularite for use as cosmetics, dyes and paints in Botswana around AD400.
La dimension visuelle se fait remarquer aussi au vers 8 (qui clot le deuxieme quatrain), qui offre sous forme condensee cette specularite a la fois formelle et thematique.